Expenditure per person = Cost of intervention/Number of people protected.
Expenditure for the city = Cost per person × Population size (The population size used was approximately 2,700,000 inhabitants of Dar es Salaam city × Mean coverage of the intervention.
a The cost of insecticide treated bed nets at the time when this study was carried out was TShs. 6000, at the exchange rate of US $ TShs. 1150 per US $ at the time. Key assumptions are approximately two people per net; ITN coverage was approximately 26%.
b The total median cost of installation of window screens was approximately US $ 25.5 spent on approximately a median of 11 people per house.
cThe total median cost of installation of ceilings was approximately UD $ 350.5 spent on approximately a median of 11 people per house.